Jose Mourinho has hinted that Chelsea may not increase their offer for Everton defender John Stones.
Everton have rejected a second Chelsea bid of £26 million for England defender Stones, 21, who made 23 Premier League starts last season.
"The market sometimes has no rules," Mourinho said. "We, as Chelsea, we make our own rules.
"To make our own rules is to evaluate the players, and to know the players' value, and to know when we have to stop and turn to another side and think in another option."